Question 1

What is the cheapest month to fly to Chicago?

Accepted Answer

The cheapest month to fly to Chicago from Dublin is in September. Flight prices, which tend to average around £348, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Chicago from Dublin during November instead. Flights to Chicago in November, while not as cheap as those in September, still average around £349.

Question 2

How have Dublin to Chicago flight prices changed over time?

Accepted Answer

As of December 2025, prices for Dublin to Chicago flights are approximately 27% more expensive when compared to flights at the same time last year.

Question 3

How many flights depart from Dublin to Chicago on average per day?

Accepted Answer

As of December 2025, 7 flights take off from Dublin and land in Chicago each day. The most common flight departure time for this route is 10:00, with 81% of daily flights taking off at midday.

Question 4

What is the cheapest airline that flies from Dublin to Chicago?

Accepted Answer

British Airways, KLM, and Delta are the most popular carriers operating from Dublin to Chicago

Question 5

What is the most punctual flight time for Dublin to Chicago flights?

Accepted Answer

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Question 6

Which airlines fly to Chicago?

Accepted Answer

Aer Lingus, United Airlines and British Airways are the top three most popular airlines that fly to Chicago from Dublin according to our data. Aer Lingus is the first choice among our users, with 71% of people opting to fly with this airline when travelling to Chicago. Keep in mind that there are 6 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

Question 7

What is the cheapest time of day to depart on your flight to Chicago?

Accepted Answer

Flying to Chicago from Dublin in the evening is the least expensive time of day to depart. momondo users have found prices as low as £478 when looking at flights departing in the evening. Flights at midday are often more expensive, with an average ticket price of £592.

Question 8

What is the cheapest day to depart on your flight to Chicago?

Accepted Answer

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as £530. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Saturday, with ticket prices averaging around £595.

Question 9

What is the cheapest Dublin to Chicago flight route?

Accepted Answer

Fly from Dublin to Chicago O'Hare Intl for the best Dublin - Chicago flight prices

Question 10

What cabin class options are available on Dublin to Chicago flights?

Accepted Answer

There are 3 cabin classes available to choose from on Dublin to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 11

Can stopping save me money on Dublin to Chicago flights?

Accepted Answer

You could potentially save up to 25% on your flight if you consider stops on a Dublin to Chicago flight.

Question 12

Which stopover airport has the shortest travel time from Dublin to Chicago?

Accepted Answer

Flights connecting via London (LHR) have the shortest average one-way travel time: 11h 45m.

Question 13

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

Question 14

What is the typical price of a round-trip flight between Dublin and Chicago?

Accepted Answer

Prices are currently typical for flights on this route.Typical prices usually range from £350 to £479.
The lowest price recently found on this route was £355.

Question 15

How many flights depart from Dublin to Chicago on average per week?

Accepted Answer

As of December 2025, 54 flights take off from Dublin and land in Chicago each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

Question 16

How often are flights from Dublin to Chicago delayed?

Accepted Answer

Historically, on average around 12% of flights between Dublin and Chicago have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

Question 17

Which airport is the most popular for stopovers for flights between Dublin and Chicago?

Accepted Answer

Reykjavik (KEF) was the most common stop: 86% of momondo users choosing one-stop flights on this route connected there.

Question 18

Which stopover airport offers the lowest fares from Dublin to Chicago?

Accepted Answer

Flights via Reykjavik (KEF) offer the lowest average return price of £947.

Question 19

Which airline has the best punctuality record on Dublin to Chicago flights?

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

Question 20

Which stopover airport has the shortest connection time from Dublin to Chicago?

Accepted Answer

London (LHR) has the shortest average stopover time for this route: 1h 38m.

Question 21

How far in advance should I book a flight to Chicago?

Accepted Answer

You are more likely to see cheaper flights to Chicago from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £449 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Dublin for as low as £401 on momondo.

Question 22

When did momondo last update prices for flights from Dublin Airport to Chicago?

Accepted Answer

Prices for flights from Dublin Airport to Chicago refresh daily.

Question 23

How many operators does momondo search for flights from Dublin Airport to Chicago?

Accepted Answer

There are 6 operators available for flights from Dublin Airport to Chicago as of December 2025.

Question 24

How old do you have to be to fly from Dublin Airport to Chicago?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dublin Airport to Chicago.

Question 25

What documentation or ID do you need to fly to Chicago?

Accepted Answer

The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best price found	£369
Fastest flight time	8h 35m
Direct flights	Every day
Airports in Chicago	3 airports

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom £239	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
British Airways	PriceFrom £297	Free Cancellation	Rating 6.7 7,615 reviews	Search British Airways flights
Finnair	PriceFrom £313	Free Cancellation	Rating 7.6 1,339 reviews	Search Finnair flights
Aer Lingus	PriceFrom £342	Free Cancellation	Rating 7.2 1,412 reviews	Search Aer Lingus flights
United Airlines	PriceFrom £352	Free Cancellation	Rating 7.4 9,114 reviews	Search United Airlines flights
American Airlines	PriceFrom £450	Free Cancellation	Rating 7.2 11,056 reviews	Search American Airlines flights

Cheap flights from Dublin to Chicago from £342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Chicago departing on 8/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Dublin to Chicago

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Icelandair flights from Dublin to Chicago

Our best Icelandair deals on Dublin to Chicago flight tickets

Scandinavian Airlines flights from Dublin to Chicago

Our best Scandinavian Airlines deals on Dublin to Chicago flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Dublin to Chicago that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Dublin to Chicago